Question

to demonstrate a double displacement reaction the solution of sodium sulphate and barium chloride are mixed
a)what is the colour of precipitate ? name the compound precipitated

Answer 1

white PPT

sodium chloride and Barium Chloride

Answer 2

A $\sf{\underline{double \ displacement \ reaction}}$ is a reaction in which exchange of ions between the reactants takes place.

Reaction between Sodium Sulphate and Barium Chloride is as follows :-

$\sf{Na_2SO_4 \ + \ BaCl_2 \rightarrow \ BaSO_4 \ \downarrow \ + \ 2NaCl}$

Here,

$\downarrow$ shows formation of precipitate.
The $\sf{\underline{insoluble \ substance}}$ formed is known as precipitate.

So, $\sf{BaSO_4}$ = Precipitate

It is of $\sf{\underline{white}}$ colour.